GetPixelRGBO     8605 coders/png.c                          GetPixelRGBO(q, transparent);
GetPixelRGBO     8627 coders/png.c                          GetPixelRGBO(q, transparent+i);
GetPixelRGBO     8637 coders/png.c                          GetPixelRGBO(q, semitransparent);
GetPixelRGBO     8653 coders/png.c                          GetPixelRGBO(q, semitransparent+i);